Chicago merger deals last week were redone, undone, never done and, more or less, done.
The big one that didn’t fly after weeks of speculation was the acquisition of debt-laden USAir by the parent of United Airlines, UAL Corp.
On the ground, two big fertilizer firms cut a deal to combine in a transaction worth more than $1 billion. In an exchange of stock, Northbrook-based IMC Global Inc. will buy Vigoro Corp. of Chicago.
For pricier real estate, Chicago investor Sam Zell was making sounds like he might renew a bid for the Manhattan landmark Rockefeller Center.
In Oak Brook, industrial-gas producer CBI Industries Inc. told Praxair Inc. its $2.1 billion offer was too low; meanwhile, the Securities and Exchange Commission was looking into charges of insider trading before the bid was announced Oct. 26.
